Break off the touch screen, two brothers resistance screen and capacitance screen

In today’s rapidly changing technology, we are dealing with various electronic devices every day. The most common ones are smartphones and tablets. The screens of these devices are not only the window for us to communicate with the digital world, but also their core interactive parts. When it comes to touch screen technology, we have to mention two “star” players – resistive touch screen and capacitive touch screen. Although these two “brothers” are both outstanding in touch technology, their personalities, characteristics, and applicable scenarios are vastly different. Next, let’s talk about two or three things about these two touch screens together! 1. Personality traits: A resistive touch screen is like an old-fashioned gentleman, using the principle of mechanical pressure sensing. When fingers or other objects press onto the screen, the two layers of the screen will come into contact, completing a single click operation. This design makes resistive touch screens highly sensitive to pressure, and even light pressure can be recognized. Meanwhile, due to its relatively simple structure and low cost, it was highly popular in the early market. 2. Working principle: A resistive touch screen usually consists of three layers: the top layer is a transparent plastic film with a conductive coating, the middle layer is an elastic isolation material, and the bottom layer is another transparent plastic film with a conductive coating. When an external force acts on the surface of the screen, the upper layer of the film is pressed down on the lower layer of the film through the elastic material in the middle, forming a current circuit. The location where this current circuit is established is the user’s click point. 3. Advantages of Multi touch: Supports input from multiple contacts, which is very useful for operations that require complex gestures; Strong wear resistance: Due to the use of hard materials in its structure, it has good wear resistance; Suitable for glove or sharp tool operation: it can be controlled without direct skin contact, which is very helpful for use in special environments; Low price: With obvious cost advantages, it is suitable for users with limited budgets or industrial applications; Compatible with touch pens of different materials: You can use different touch pens for operation, such as ballpoint pens or pencils. 4. Disadvantages: Sensitivity issues: After prolonged use, aging may occur, leading to a decrease in sensitivity; Resolution limitation: The resolution and accuracy are relatively low, making it difficult to meet the needs of fine operations; Slow response speed: Compared to other types of touch technology, resistive response time is longer; Poor display effect: Due to the multi-layer structure, the transmittance decreases, which affects the display effect. If resistive touch screen is an old-fashioned gentleman, then capacitive touch screen is more like a fashionable new star. It utilizes the human body’s current sensing for operation, and as long as the finger is placed close to the screen, a coupling capacitor will be formed. Due to the fact that the human body is also a conductor, it can change the electric field distribution on the screen surface, thus detecting the position of the fingers and making corresponding responses. Capacitive touch screens have become the mainstream choice for modern intelligent devices due to their excellent experience and beautiful design. 2. Working principle: The basic structure of a capacitive touch screen includes a glass substrate, conductive coating, insulating medium, and covering layer. During the working process, the touch screen will generate a uniformly distributed low intensity signal voltage on its surface. When the user’s fingers or other conductors come into contact with the screen, it will absorb a portion of the signal current through induction. By measuring the changes in the signal, it is possible to accurately determine the position information of the fingers. 3. Advantages: High sensitivity and accuracy: It can provide more accurate touch positioning, suitable for applications that require fine operation; Rapid response: Almost no delay felt, bringing a smoother user experience; Strong scratch resistance: Due to the use of hard glass as a protective layer, it is not easily damaged by external factors; Strong adaptability: able to work normally even in humid environments, unaffected by sweat; Simple and beautiful appearance: The integrated design enhances the overall sense of the product and conforms to modern aesthetic trends. 4. Disadvantage does not support glove operation: Due to the dependence on capacitance effect, operations with gloves or objects separated by a layer cannot be effectively recognized; Sensitive to strong electromagnetic interference: Strong magnetic or electric fields in the surrounding environment may affect the stability of capacitive touch screens; The possibility of accidental touch is high: for some edge areas or subtle movements, incorrect recognition may occur; High cost: Compared to resistive touch screens, capacitive touch screens have higher manufacturing costs and correspondingly higher selling prices. Summary: Both resistive and capacitive touch screens have their own advantages and disadvantages. In practical applications, we need to choose appropriate touch solutions based on specific usage needs. For example, if stable control of equipment is required in outdoor environments, a capacitive touch screen may be a better choice; But if a durable touch panel is needed in a factory workshop or laboratory, a resistive touch screen may be more suitable. With the continuous advancement of technology, these two touch technologies will continue to develop and improve in the future, bringing us more surprises and convenience.